EXH0247019085

PCHBPollution Control Hearings Board of the State of Washington

.... 16300 ¢l_ri.zen,en road. suite 350 vancouver I /_ I seattle, W=L_l_tttgton981BS-341B (206) 241-6000 - pl_one edmonton !Z.¢_od _ ,, (2oe)=s.2,20-,=x seattle | EXHIBITgO_'_'7 | =-s.o- I November 26, 2001 _M. Green • Colonel Ralph H. Graves Ms. Muffy Walker Ms. Gall Terzi U.S. Army Corps of Engineers Seattle District P.O.Box 3755 Seattle,WA 98124-3755 DearColonelGraves,Ms. Walker andMs. Terzi: Re:CorpsRef.No. 1996--4-02325:PortofSeattleLow Flow Mitigation As you know, Northwest Hydraulic Consultants ho been retained on behalf of the Airport Communities Coalition (ACC) to provide a techaical review of stormwater facilities and strearnflow impacts from development activities at SeaTac airport. The main purpose of this letter is to serveas a reminder that there ere numeroussubstantivedeficiencies and uncertainties in the Port's proposedplans for low flow mitigation in Miller, Walker, and Des Moines Creeks. This letter is also intended to identify an additional serious deficiency which we have not addressedpreviously, but which is evident from documentsrecently obtainedby the ACC. Our prc'viouscomments in this matter are already on record and remain unresolved. The most recentof those comments are in the form of legal declarations by William Rozeboom and arc cited in Peter Eglick's letter to you datedNovember 16, 2001. Now, as then, public comment is forced to rely on incomplete draR documents. In the caseof the Port's Low Flow A_tlysis, the documentationof the evaluation continuesto be so pooras to make an informed review virtually impossible. There continues to be an absence of critical design and project operation information necessaryto demonstratehow the systemwill function in practice. Becauseof these…
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